T407 drum suction device is a stadium dedicated rolling water; a drum made of PVA foam structure, microporous sponge communication, absorbent, quality is ten times the normal sponge; mop structure, simple operation, each the preferred type of stadium venues cleaning hydrocephalus. (Recommendation: In order to extend the life of the product, before using a dry PVA sponge soaked in water for ten minutes before use.